Overall general rule of
mine.......
"Keep ANYTHING in Brilliant Uncirculated Condition" !Regardless of the mintmark, date, or denomination.
Roll searching is such a fun pastime ! The little keeper treasures that one finds along the way make it all worthwhile....
Keep it....hold it....love it.....learn it.....protect it....admire it......and occasionally tell it how pretty it is......

I'm really impressed with your knowledge gathering "beforehand" with roll searching......You're starting off
PERFECTLY !
By the way......in your "nickel searching", keep an eye out for the
Silver War Nickels !
They range from
1942 to 1945, and you can spot them because on the reverse, the mintmark is a
HUGE P, D, or S above the dome of Monticello.
Year.... Mintage..... Numismatic Value Range
1942... P.... 57,873,000.... $1.25 - $95.00
1942... S.... 32,900,000.... $1.25 - $150.00
1943... P.... 271,165,000.... $1.10 - $120.00
1943... D.... 15,294,000.... $1.25 - $1100.00
1943... S.... 104,060,000.... $1.25 - $200.00
1943/2 ...P.... unknown.... $30.00 - $1265.00
1944... P.... 119,150,000.... $1.25 - $500.00
1944... D.... 32,309,000.... $1.25 - $300.00
1944... S.... 21,640,000.... $1.25 - $900.00
1945... P.... 119,408,100.... $1.00 - $300.00
1945... D.... 37,158,000.... $1.25 - $500.00
1945... S.... 58,939,000.... $1.25 - $400.00
Even in horrible condition......they can still be worth about a $1.00 apiece !
Here's a picture of what the reverse looks like so that you can see what to look for with that mintmark.
And this is the obverse (front).....looks like any other Jefferson, so you need to look for those dates and that BIG mintmark !